229909120

Appears in sequences

• Even multiply-perfect numbers divided by 2.at n=14A219544
• Numbers m such that m divides sigma(2*m).at n=24A227302
• Numbers k such that there is an anti-divisor d of k satisfying sigma(d) = k.at n=30A286917
• 1/2 times 3-perfect (triply perfect, tri-perfect, triperfect or sous-double) numbers: a(n) = A005820(n)/2.at n=3A326051
• a(n) = A349745(n) divided by 2 if it is even, and 0 if A349745(n) is odd.at n=23A351548